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Answer 1

Answer:

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Answer 2

(x²+3x)² - 5(x²+3x) - y(x²+3x) + 5y

[(x²)²+(3x)²+2(x²)(3x)] - 5[(x²)²+(3x)²+2(x²)(3x)] - y[(x²)²+(3x)²+2(x²)(3x)] + 5y

[(a+b)²=a²+b²+2ab]

x⁴+9x²+6x³ - 5(x⁴+9x²+6x³) -y(x⁴+9x²+6x³) + 5y

-5-y+5y(x⁴+9x²+6x³)

-5x⁴-45x²-30x³ - x⁴y-9x²y-6x³y + 5x⁴y+45x²y+30x³y

-5x²(x²-9-6x) + 4x⁴y+36x²y+24x³y

5x²(x²-9-6x) + 4x²y(x²+9+6x)

Ans:-(5x²+4x²y)(x²-9-6x)